Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/lib/DebugInfo/CodeView/Formatters.cpp

@@ -0,0 +1,48 @@
+//===- Formatters.cpp -----------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/CodeView/Formatters.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/DebugInfo/CodeView/GUID.h"
+#include "llvm/Support/raw_ostream.h"
+#include <algorithm>
+#include <cassert>
+
+using namespace llvm;
+using namespace llvm::codeview;
+using namespace llvm::codeview::detail;
+
+GuidAdapter::GuidAdapter(StringRef Guid)
+    : FormatAdapter(makeArrayRef(Guid.bytes_begin(), Guid.bytes_end())) {}
+
+GuidAdapter::GuidAdapter(ArrayRef<uint8_t> Guid)
+    : FormatAdapter(std::move(Guid)) {}
+
+void GuidAdapter::format(raw_ostream &Stream, StringRef Style) {
+  static const char *Lookup = "0123456789ABCDEF";
+
+  assert(Item.size() == 16 && "Expected 16-byte GUID");
+  Stream << "{";
+  for (int i = 0; i < 16;) {
+    uint8_t Byte = Item[i];
+    uint8_t HighNibble = (Byte >> 4) & 0xF;
+    uint8_t LowNibble = Byte & 0xF;
+    Stream << Lookup[HighNibble] << Lookup[LowNibble];
+    ++i;
+    if (i >= 4 && i <= 10 && i % 2 == 0)
+      Stream << "-";
+  }
+  Stream << "}";
+}
+
+raw_ostream &llvm::codeview::operator<<(raw_ostream &OS, const GUID &Guid) {
+  codeview::detail::GuidAdapter A(Guid.Guid);
+  A.format(OS, "");
+  return OS;
+}